thats RASHUNAL or NONRASHUNAL
numbers tween 0.3 & 0.33333333333333333...
rashunal part eezee...0.31, 0.32, 0.33, 0.333, 0.3333
nonrashunal require a littel thank::
sqrt(10)=3.16227766...
root(11)=3.31662479
root(11.1)=3.33166625
root(11.11)=3.333166666...